RCE in Facebook React-Dev-Utils
CVE-2018-6342
react-dev-utils on Windows allows developers to run a local webserver for accepting various commands, including a command to launch an editor. The input to that command was not properly sanitized, allowing an attacker who can make a network request to the server (either via CSRF or by direct request) to execute arbitrary commands on the targeted system. This issue affects multiple branches: 1.x.x prior to 1.0.4, 2.x.x prior to 2.0.2, 3.x.x prior to 3.1.2, 4.x.x prior to 4.2.2, and 5.x.x prior to 5.0.2.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.028 (85.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Facebook React-dev-utils — versions 5.0.2, 5.0.0, 4.2.2
- Microsoft Windows
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve-assign@fb.com (Third Party Advisory, x_refsource_MISC, Release Notes)
- cve-assign@fb.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2018-6342?
- CVE-2018-6342 is a critical-severity vulnerability in Facebook React-Dev-Utils, classified under OS Command Injection. CVSS score: 9.8/10. Published 2018-12-31.
- How severe is CVE-2018-6342?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-6342 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.